override public void Visit(AST_read_statement read_statement)
{
base.Visit(read_statement);
if (read_statement.Identifier.Declaration.Type.Kind == bool_type)
{
Error("Read statement requires int or string type.", read_statement.Identifier);
}
}
public override void Visit(AST_read_statement read_statement)
{
bool ok = false;
while (!ok)
{
string input = Console.ReadLine();
if (evaluateVisitor.SetVariable(read_statement.Identifier.Name, input))
{
break;
}
Console.WriteLine("Not a valid integer.");
}
}
private AST_read_statement Parse_read_statement()
{
IncrementDepth();
AST_read_statement read_statement;
Match(read_Keyword);
AST_identifier identifier = Parse_identifier(Semicolon);
DebugPrint("read_statement, identifier = " + identifier.Name);
read_statement = new AST_read_statement(identifier);
DecrementDepth();
return(read_statement);
}
public virtual void Visit(AST_read_statement read_statement)
{
IncrementDepth();
read_statement.Identifier.Accept(this);
DecrementDepth();
}